San Mateo County is marking its 10th annual ‘Give Kids A Smile Day’ when local dentists offer free services to low-income youth who might not otherwise be able to access or afford care.

The joint effort Feb. 7 between the county’s Health System and San Mateo Dental Society provides oral exams, cleanings and fluoride treatments to those under 18. Families also receive help getting enrolled in health insurance.

“Nearly one in four children, ages 2 to 11, has untreated cavities in their baby teeth,” said Dr. Gracia Cua of the society in a prepared statement. Cua said untreated dental disease is not only painful but affects a child’s physical, emotional and social well-being.

The local day is part of a national event benefiting nearly a half-million children.

This year’s day is the 10th anniversary of the county’s participation and falls in February to mark National Children’s Dental Health Month.

To schedule an appointment, call the San Mateo County Health Coverage Unit at 616-2002. More information about health insurance enrollment for children is also available at that number or by visiting www.smcchi.org.